Can sealer



Oct. 4, 1938. cv NELSON CAN SEALER Filed July 8, 1955 2 Sheets-Sheet lINVENTOH' CARL. NELS N 5Y6 M Ml ATTO NEY5 Oct. 4, 1938. c. NELSON2,132,041

CAN SEALER Filed July 8, 1935 '2 Sheets-Sheet 2 INVENTOR CAR L N E LSONBY WK M l-'4 ATTORNEY Patented Oct. 4, 1938 UNITED STATES PATENT OFFICEtional Pressure Cooker Company, Eau Claire,

Wia, a corporation of Wisconsin Application July 8, 1935, Serial No.30,345

3 Claim.

This invention relates to new and useful improvements in can sealers ofthe portable type and more particularly to a novel means for relativelyadjusting the seaming rollers with respect to the can. I,

An object of the present invention is to provide a can sealer comprisinga plurality of seammg rollers supported upon pivoted arms having meansfor actuating them whereby the seaming rollers are alternately movedinto and out of seaming engagement with the can closure, and eccentricmeans being provided in connection with said arms whereby they may berelatively adjusted with respect to the-can to accurately position themwith respect thereto.

Other objects of the invention reside in the novel construction or theframe of the can sealer, whereby suitable eccentrics are provided in theupper portion thereof for relatively adjusting the seaming rollers withrespect to the can; in

the construction of the machine frame which comprises a base havingupright posts secured thereto and to the upper ends of which is secureda cross head in which the driving mechanism of the can sealer issupported, and the upper portions of said posts being provided witheccentrics, whereby the arms which support the usual seaming rollers,may be relatively adjusted to accurately position the seaming rollerswith respect to the can closure; and in the provision of a can sealerwhich is extremely simple and inexpensive in construction, whereby itmaybe manufactured at small cost..

Other objects of the invention will appear 'from the followingdescription and accompanying drawings and will be pointed out in theannexed claims.

In the accompanying drawings, there has been disclosed a structuredesigned to carry out the various objects of the invention, but it is tobe understood that the invention is not confined to the exact featuresshown as various changes may be made within the scope of the claimswhich follow.

In the drawings:

Figure 1 is a rear view of a can sealer showing the invention embodiedin the construction thereof;

Figure 2 is a sectional plan view on the line 2-2 of Figure 1, showingthe arrangement of the arms which support the seaming rollers and thedriving means therefor;

Figure 3 is a detail sectional view on the line M of Figure 1, showingthe eccentric means provided at the upper ends or the uprightposts forrelatively adjusting the seaming rollers with respect to the can; and

Figure 4 is a view showing a modified construction wherein theeccentrics are made independently of the posts and are adjustablysupported thereon.

In the selected embodiment of the invention here shown, there isillustrated in Figure l, a can sealer, the general construction of whichis similar to the one disclosed in my pending application, Serial Number30,344, filed July 8, 1935.

The can sealer as here shown, comprises a base 2 provided with suitableclamping elements, generally indicated by the numeral 3, whereby thesealer may be conveniently clamped to a suitable support such, forexample, as a table top. A lower chuck plate d is rotatably mounted inthe base and is adapted for vertical movement by a cam device 5 havingan operating handle 6 which, when rotated in one direction, will causethe chuck plate i to be elevated.

Upright posts 1 are shown provided with reduced end portions 8, receivedin apertures in the base 2 and secured therein by suitable nuts 9, asbest illustrated in Figure 1. The upper ends of the posts 7 have reducedportions ii adapted to be received in suitable apertures provided in across head i2, and which is secured to the terminals it by suitable nutsit.

An upper chuck plate it, having a knurled periphery adapted for drivingengagement with a can closure, is detachably secured to a bevel gear 85,which, in turn, is secured to a suitable shaft ll, rotatably mounted inbearings provided in the cross head i2. A bevel pinion i8 is rotatablymounted upon a stud l9 and has an operating crank it secured thereto,whereby it may be conveniently rotated thereby to drive the chuck plateit, it being understood that the pinion is constantly meshes with Qiebevel gear it.

Each post i is provided adjacent its upper end with a reduced portion22, upon which are piv- 'otally mounted suitable arms 23, each carryinga seaming roller 26. The reduced portions 22 of the upright posts '5 areeccentrically disposed with respect to the axes of the posts I, as bestshown in Figure 3, whereby they function as eccentrics to relativelyadjust the arms with respect to the can, and whereby the seaming rollersmay be accurately positioned with respect to the can closure.

Each arm 23 has a iorked end portion 25 adapted to receive a connectingbar 26, which is coupled thereto by suitable coupling pins 21.

A plurality of apertures 28, 29, and 3| are provided in the forked endportions 23 of the arms 23, adapted to be alined with suitable aperturesprovided in the connecting bar 26, and whereby the spacing betweentheseaming rollers 24 may be varied to adapt the sealer for diflerentsizes of cans. The apertures 28, 23, and 3|, in the forked end portions25 of the arms provide means whereby the can sealer may be quicklyadjusted to diflerent sizes of cans, by simply withdrawing the couplingpins 21 and shifting them into other apertures corresponding to the sizeof can to be sealed.

Reciprocal movement is imparted to the connecting bar 26 by a cam 20operatively connected to the shaft l1, and adapted to engage a forkedmember 30 secured to the connecting bar, as illustrated in Figure 2.This mechanism is shown and described in detail in my copendingapplication, hereinbefore mentioned, and it is therefore thoughtunnecessary to herein describe the same in detail.

In order to hermetically seal the can, the seaming rollers must beaccurately positioned withrespect to the marginal flange of the canclosure, so that when the seaming rollers are swung inwardly the maximumof their movement, they will press the rolled edge of theclosure and theflange of the can into sealing engagement with the can body to therebyhermetically seal the can.

The eccentrics 22 provided at the upper portions of the posts I providemeans whereby the seaming rollers may be quickly and accurately adjustedwith respect to the can by simply loosening the nuts 9 and I3 of eachrod and inserting a small pin or instrument into an aperture 32 providedin each post and relatively rotating said posts until the seamingrollers are accurately positioned with respect to the can.

By the employment of the simple adjusting mechanism, herein disclosed,the can sealer is greatly simplified, as will readily be noted byreference to the drawings, particularly Figure 2, wherein the simplicityof the mechanism is clearly illustrated.

In Figure 4, I have shown a construction in which the upper end of eachpost I is provided with a reduced extension 33, upon which are mountedeccentric bushings 34, the lower ends of which are seated against theshoulders 35 of the posts I. The upper ends of the bushings are adaptedto be engaged by the lower faces of the hubs 36 of the cross head I2,and whereby the eccentric bushings may be secured in ad- I justedposition by manipulation of the nuts l3 provided in the upper ends ofthe posts I. In the 7. form shown in Figure 4, the hubs of the arms 23are bored out to receive the bushing 34 and are rotatable thereon insubstantially the same manner shown in Figure 2.

Each bushing 34 is preferably flanged at its lower end, as shown at 31,which flange may be provided with oppositely disposed flat faces toprovide means for rotating it, or the periphery of the flange 31 may besuitably knurled so that when the bushing is released by loosening thenut It, the bushing may be conveniently rotated with the fingers therebyto accurately adjust the seaming roller with respect to the can. In theform shown in Figure 4, the upright posts I are permanently secured tothe base I.

I claim as my invention: 1. In a can sealer, a base having upright possecured thereto, a cross head secured to the upper ends of the posts,chuck plates for supporting the can, means for driving one of said chuckplates to rotate the can, a plurality of seaming rollers, arms forsupporting said rollers, means operatively connecting together said armswhereby the spacing between the seaming rollers may be varied inaccordance with cans of different diameters, eccentrics at the upperends of said posts for supporting said arms, and means whereby saidposts may be relatively operated to rotate the eccentrics and therebyrelatively adjust the arms and seaming rollers with respect to the can.

2. In a can sealer, a base having vertically disposed apertures therein,a pair of upright posts fitting in said apertures, means for securingthe posts in said apertures, said posts having their upper ends formedwith reduced extensions, 9. cross head having apertures for receivingsaid extensions, means for securing the cross head to the posts, aneccentric formed on each post below the cross head, an arm pivotallymounted on each eccentric and each carrying a seaming roller, chuckplates for supporting a can to be sealed, means for driving one of saidchuck plates; thereby to rotate the can, means for actuating the arms tocause the seaming rollers to be alternately moved into and out ofseaming engagement with the closure and can, and means whereby saidposts may be relatively rotated, thereby to actuate the eccentrics torelatively adjust the arms with respect to the can.

3. In a can sealer, a base having upright posts mounted thereon,eccentrics integrally formed on said posts, a cross head secured to theupper ends of the posts, chuck plates between which the can issupported, means for driving one of said chuck plates'to rotate the can,a plurality of seaming rollers, an arm rotatabiy mounted on eacheccentric and each carrying a seaming roller, a member adjustablyconnecting together said arms whereby the spacing between the seamingrollers may be varied in accordance 'with cans of different diameters,and means whereby said posts may be relatively rotated in said base,thereby to rotate the eccentrics to accurately position the seamingrollers with respect to the edge of the can closure and top.

CARL NELSON.

